typescript - 通过 typescript 中的动态键字符串访问 react native 样式表成员

Question

我有这个样式表:

const styles = StyleSheet.create({
  primary: {},
  secondary: {},
})

我想使用动态组合的字符串访问键。

<View style={styles[props.type]}/>

这就是 TS 提示的时候(但代码运行得很好):

Element implicitly has an 'any' type because expression of type 'string' can't be used to index type '{ primary: { }; secondary: { }'.
  No index signature with a parameter of type 'string' was found on type '...'.ts(7053)

我怎样才能将 TS 推向正确的方向并使其高兴？

Answer 1

这是最小的精简工作示例:

import { StyleSheet } from "react-native";

type Props = {
    type: 'primary' | 'secondary'
}

const styles = StyleSheet.create({
    primary: {},
    secondary: {}
});

const Component: React.FC<Props> = ({ type }) => {
  const style = styles[props.type];

  // ...
}